Shark Reef Aquarium at Mandalay Bay will eerily transform into Haunted Reef on Saturday, Oct. 29 from 10 a.m. to 10 p.m. Costumed children 12 and under will receive complimentary access and sugary sweets. Guests 17 years of age and older will also receive complimentary admission upon donating blood at the United Blood Services booth. The booth, set up just for Haunted Reef, will be open Saturday, Oct. 29 from 10 a.m. to 6 p.m.

Fearsome predators including sharks and a rare Komodo dragon with dagger-like teeth and piercing razor-sharp claws will lurk in exhibits, terrorizing spectators. Rattling chains, creaking doors and haunting music will replace the normally soothing sounds of the ocean and the jungle. As visitors walk through Haunted Reef’s dark and spooky tunnels, they will pass ghostly decorations and jack-o-lanterns lining the walls.